You can do it with a Galaxy map--no mod required.
You'll just need to give everyone a dead asteroid to start as a HW (or a player-owned pirate base if you don't mind them having a trickle of credits).
If you want them to be able to research, make a template for research facilities (or any other kind you like) there.
Create a template for each side's starting forces and apply it to their HW's.
Very easy to do.
I have a couple of maps where each side has no or only a tiny amount of credits and no colonizable worlds aside from dead asteroids or pirate bases. I give them full research facilities.
They start with a set amount of cash to buy their fleets and research but you can easily make it all dead asteroids, no cash and no research as well with only pre-assigned ships.
In these sort of set-ups, lost labs and factories can't be replaced.
To make it a mod, just eliminate the logistics slots at all planets and edit the HW templates. I can set it up with/for you if you like.
